2 H2 react with 1 O2 and form 2 H2O se the suggested models to represent the following chemical equations
1
1.2
D +
If Hydrogen(H) is Q and oxygen(O) is O Write the equation for
00 00 + OO + 000 000
If Magnesium(Mg) is D and oxygen(O) is O Write the equation for
C.
DO O
DO
If Iron(Fe) is and oxygen is o Write the equation for
OO oo
000
QO
ooo
2.3
n 3: Determine if a chemical reaction is balanced.
In a chemical reaction no atoms are lost or gained in the reaction, they are simply
The amount of atoms involved at the beginning of a reaction must be
found at the end of the reaction.​

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

If we relied solely on the nonrenewable resources found in the u. s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal